Approximately 40% of patients with chronic urticaria have antibodies to the high affinity IgE receptor (FceR1). Sera from patients with chronic urticaria significantly upregulate basophil CD203c expression as measured by flow cytometry.
0 - 12
7 - 15 days
- CD203 Antibody
- Anti-FcER1 Antibody
Collect specimen in a red top tube. Centrifuge, aliquot serum into a plastic vial within 1 hour of collection and refrigerate up to 7 days or freeze for longer storage.
Test sent to Mayo Medical Laboratories; performed by National Jewish Health.